They're glued together, mostly non-repairable, locked down devices that can't run the operating systems I want (which is really the deal breaker) and lack the number and type of ports that I want. I find touchscreens awful in every way, and the physical keyboards that are available are poor. They're basically just as limited as smartphones in this regard, only much more inconvenient to carry.
If I need to use the internet on the go, take pictures, jot down notes if I don't have pen and paper, I use my phone. If I need to do anything else, I use a laptop. Trying to work around a tablet's limitations with piles of adapters is pointless when I can just use a laptop, especially when I can run the operating system I want on it.
I have built and repaired literally hundreds of computers in my life.
iPad are repairable. Like PC's, all you can do is replacing components now a day. It's a bit trickier on an iPad, but it's doable. Considering how reliable iPads are, I would rather have them than a PC for long term hassle free ownership. If you are the type of person who would like to install his own OS (and perhaps write his own OS), then taking an iPad apart and replacing broke components is a no brainer.
None of the iPads I owned so far exhibited any problem, so repairability is a non issue in my case. All my non-Apple laptops I owned so far eventually had problems (LCD stopped working, broken hinges, etc.), so while in theory they are more repairable than an iPad, they are the ones that need repairs, and none of my iPad did. So, to me reliability and repairability have to be considered together.
As for installing your own OS, if you are looking to do that then it's not really the device for you. We can debate the merit of being able to install your own OS, but there is really no point in doing that because everyone's need is different. For 99.9% of the population, I would say that not being able to install your own OS is a blessing.
Touch screen, keyboard are all personal. If you don't like them, you don't like them.
But taking thing as a whole, there is nothing about an iPad that you like. It makes total sense not to own one.